An Earley Parsing Algorithm for Range Concatenation Grammars

Laura Kallmeyer (1) , Wolfgang Maier (1) , Yannick Parmentier (2)

1 SFB 833 - Emmy Noether Project
2 TALARIS - Natural Language Processing: representation, inference and semantics

We present a CYK and an Earley-style algorithm for parsing Range Concatenation Grammar (RCG), using the deductive parsing framework. The characteristic property of the Earley parser is that we use a technique of range boundary constraint propagation to compute the yields of non-terminals as late as possible. Experiments show that, compared to previous approaches, the constraint propagation helps to considerably decrease the number of items in the chart.

Domains: Computation and Language [cs.CL]

Laura Kallmeyer, Wolfgang Maier, Yannick Parmentier. An Earley Parsing Algorithm for Range Concatenation Grammars. Joint conference of the 47th Annual Meeting of the Association for Computational Linguistics and the 4th International Joint Conference on Natural Language Processing of the Asian Federation of Natural Language Processing (ACL-IJCNLP 2009), Aug 2009, Suntec, Singapore. pp.9-12. ⟨inria-00393980⟩